U.S. Army Wounded Soldiers Evacuation and Operation Training During The U.S. and South Korean Militaries Joint Military Drills in South Korea. March 2016. OSAN, SOUTH KOREA. Eighth Army is under the wounded soldiers evacuation training on Mar. 15, 2016 in Osan Air Base, Osan, South Korea. Four soldiers are disguised as severely injured during a combat and are on stretchers hung by hooks seven feet off the ground in Hercules a.k.a. Lockheed C-130.